THE EFFECT OF TAURINE SUPPLEMENTATION TO ALTERNATIVE DIETARY SOYBEAN CONCENTRATE USED IN FISH MEAL REPLACEMENT ENHANCES GROWTH PERFORMANCE, BODY COMP0SITION, HAEMOLYMPH PARAMETERS, IMMUNE RESPONSES AND TAURINE CONCENTRATION IN PLASMA OF JUVENILE WHITE SHRIMP Litopenaeus vannamei

An 8-week feeding trial was conducted to evaluate the effect of taurine supplementation to alternative dietary soybean concentrate used in fish meal replacement on growth performance, body composition, haemolymph parameters, immune responses and taurine concentration in plasma of juvenile pacific white shrimp (Litopenaeus vannamei). A total of 600 apparently healthy of juvenile white shrimp with similar size (initial mean body weight, 1.19±0.02g) were fed triplicate with ten practical diets (39% crude protein) were formulated to contain graded levels (0, 25, 50, 75, and 100%) of fishmeal replacement by soybean concentrate with 1000 mg/kg or without any taurine added in diets. Soybean concentrate was increased in diets; methionine and lysine were increasing supplied to make the balance amino acid profile by calculated according NRC, 2011. Fish oil was increased added when level of fishmeal was decreased to maintain around 8% of lipid for all diets.

After 8-week feeding period, weight gain percentage (WG%), feed efficiency (FE), condition factor (CF) and muscle content % of white shrimp with taurine supplemented had the higher value than dietary without any taurine added while survival rate % and hepatosomatic index (HSI) showed the opposite results. Moreover, protein, lipid and ash content in whole body and muscle of white shrimp with taurine supplemented had the higher value than dietary without any taurine added. Furthermore taurine supplemented in diets could improve glutamic oxalacetic transferase (GOT) and glutamic pyruvic transferase (GPT), taurine concentration in plasma, whole body and muscle and immune responses such as total hemocyte count (THC), phenoloxidase (PO), respiratory burst (RB), total protein (TP), glutathione peroxidase (GPx) and superoxide dismutase (SOD) of white shrimp.

Base on those data, we suggested that fish meal can be replaced by soybean concentrate up to 50% with taurine added lack of any negative affected to the growth of Pacific white shrimp (L. vannamei)